<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <Header :getNewTodo="getNewTodo" />
        <List
          :todoList="todoList"
          :checkedHandle="checkedHandle"
          :singleDeleteHandle="singleDeleteHandle"
        />
        <Footer
          :todoList="todoList"
          :setAllChecked="setAllChecked"
          :deleteAllFinish="deleteAllFinish"
        />
      </div>
    </div>
  </div>
</template>

<script>
import Header from "./components/Header";
import List from "./components/List";
import Footer from "./components/Footer";

export default {
  name: "App",
  components: {
    Header,
    List,
    Footer,
  },
  data() {
    return {
      todoList: [],
    };
  },
  methods: {
    // 新增数据
    getNewTodo(newTodo) {
      this.todoList.unshift(newTodo);
    },

    // 单选框选中切换
    checkedHandle(id) {
      this.todoList = this.todoList.map((item) => {
        return item.id === id ? { ...item, done: !item.done } : item;
      });
    },

    // 删除单个
    singleDeleteHandle(id) {
      const isDelete = confirm("确定要删除此项吗？");
      if (!isDelete) return;

      this.todoList = this.todoList.filter((item) => item.id !== id);
    },

    // 全选
    setAllChecked(done) {
      this.todoList = this.todoList.map((item) => {
        return { ...item, done: done };
      });
    },

    // 删除所有已完成
    deleteAllFinish() {
      this.todoList = this.todoList.filter((item) => !item.done);
    },
  },
  mounted() {
    this.todoList = JSON.parse(localStorage.getItem("todoList") || "[]");
  },
  watch: {
    todoList: {
      deep: true,
      handler() {
        localStorage.setItem("todoList", JSON.stringify(this.todoList));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>